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Leica APO-Summicron-SL 50mm F2 ASPH vs Sigma 50mm F1.4 DG HSM A

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Leica APO-Summicron-SL 50mm F2 ASPH

Standard Prime | Leica L

Leica APO-Summicron-SL 50mm F2 ASPH
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Sigma 50mm F1.4 DG HSM A

Standard Prime | Leica L

Sigma 50mm F1.4 DG HSM A
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Leica APO-Summicron-SL 50mm F2 ASPH vs Sigma 50mm F1.4 DG HSM A Comparison Overview

In this review, we will be comparing Leica APO-Summicron-SL 50mm F2 ASPH and Sigma 50mm F1.4 DG HSM A, two Standard Prime lenses from Leica and Sigma. Both lenses have the same focal range of 50mm but different max apertures: Leica APO-Summicron-SL 50mm F2 ASPH has a max aperture of F2 while the Sigma 50mm F1.4 DG HSM A has a max aperture of F1.4.

We will start with briefly looking and the main specs of these two lenses and in the section, we will start analyzing in more detail and list the pros and cons of each lenses.

Leica APO-Summicron-SL 50mm F2 ASPH Key Specs

  • 50mm Focal Range
  • F2 Max Aperture
  • Weather Sealed
  • Filter Thread: 67mm
  • Max Format: 35mm FF
  • Leica L Mount
  • Weight: 740g.
  • Diameter: 73mm
  • Length: 102mm
  • Min Focus Distance:0.35m
  • Max Magnification:0.2x

Sigma 50mm F1.4 DG HSM A Key Specs

  • 50mm Focal Range
  • F1.4 Max Aperture
  • Filter Thread: 77mm
  • Max Format: 35mm FF
  • Leica L Mount
  • Weight: 815g.
  • Diameter: 85mm
  • Length: 100mm
  • Min Focus Distance:0.4m
  • Max Magnification:0.18x

What type of photography are the Leica APO-Summicron-SL 50mm F2 ASPH and Sigma 50mm F1.4 DG HSM A lenses good for?

The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica APO-Summicron-SL 50mm F2 ASPH and the Sigma 50mm F1.4 DG HSM A for their suitability to various photography scenarios:

Photography Type Leica APO-Summicron-SL 50mm F2 ASPH Sigma 50mm F1.4 DG HSM A
Bird/WildlifeFairFair
SportsAverageAverage
PortraitExcellentExcellent
TravelGoodGood
StreetVery GoodVery Good
WeddingExcellentExcellent
Walk AroundGoodGood
VloggingGoodGood
LandscapeGoodGood
MacroFairPoor

Size and Weight Comparison

Size of a lens is an important deciding factor when comparing two lenses.Leica APO-Summicron-SL 50mm F2 ASPH is the longer of the two lenses at 102mm. The Sigma 50mm F1.4 DG HSM A with a length of 100mm is 2mm shorter. On the other hand, the Sigma 50mm F1.4 DG HSM A has a larger diameter of 85mm compared to Leica APO-Summicron-SL 50mm F2 ASPH's 73mm diameter.

Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Leica APO-Summicron-SL 50mm F2 ASPH weighs 740g, which means it is 75g (9%) lighter than the Sigma 50mm F1.4 DG HSM A which has a weight of 815g.


Below you can find the dimension and weight table of the 'Standard Prime Lenses in Leica L Mount for size comparison purposes.

Standard Prime Lenses in Leica L Mount for Size Comparison
Model Length Diameter Weight Street Price
Panasonic Lumix S 35mm F1.8 Lens Panasonic S 35mm F1.8
82mm
74mm 295g Amazon B&H Photo
Sigma 45mm F2.8 DG DN Contemporary Lens Sigma 45mm F2.8 DG DN C
46mm
64mm 215g Amazon B&H Photo
Panasonic Lumix S 50mm F1.8 Lens Panasonic S 50mm F1.8
82mm
74mm 300g Amazon B&H Photo
Sigma 40mm F1.4 DG HSM A Lens Sigma 40mm F1.4 DG HSM A
131mm
88mm 0g Amazon B&H Photo
Sigma 65mm F2 DG DN Lens Sigma 65mm F2 DG DN
75mm
72mm 405g Amazon B&H Photo
Sigma 56mm F1.4 DC DN C Lens Sigma 56mm F1.4 DC DN C
60mm
67mm 280g Amazon B&H Photo
Leica Summilux-SL 50mm F1.4 ASPH Lens Leica Summilux-SL 50mm F1.4 ASPH
124mm
88mm 1065g Amazon B&H Photo
Leica APO-Summicron-SL 75mm F2 ASPH Lens Leica APO-Summicron-SL 75mm F2 ASPH
102mm
73mm 720g Amazon B&H Photo

Lens Mounts

Both Leica APO-Summicron-SL 50mm F2 ASPH and Sigma 50mm F1.4 DG HSM A has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Panasonic S5 II, Panasonic S5 II X and Sigma fp L.

Sigma 50mm F1.4 DG HSM A is also available in Canon EF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.

Focal Range

Reasons to choose Leica APO-Summicron-SL 50mm F2 ASPH over Sigma 50mm F1.4 DG HSM A

Weight 740g vs 815g 75g lighter
Diameter 73mm vs 85mm 12mm smaller in diameter
Filter Thread 67mm vs 77mm Smaller filters are cheaper and easier to find
Weather Sealing Yes vs No safer to use under rain and dust
Minimum Focus Distance 0.35m vs 0.4m can focus closer to the subject
Max Magnification 0.2x vs 0.18x higher magnification better for close-up shots

Reasons to choose Sigma 50mm F1.4 DG HSM A over Leica APO-Summicron-SL 50mm F2 ASPH

Max Aperture - Wide 1.4 vs 2 Wider aperture at wide end
Max Aperture - Tele 1.4 vs 2 Wider aperture at tele end
Diaphgragm Blades 9 vs Potentially more rounded and smooth bokeh
Distance Scale Yes vs No Distance Scale to assist focusing
Depth-of-Field Scale Yes vs No Depth of Field scale to assist focusing
Length 100mm vs 102mm 2mm shorter

Common Strengths of Leica APO-Summicron-SL 50mm F2 ASPH and Sigma 50mm F1.4 DG HSM A
Internal Focusing Yes vs Yes Length of the lens doesn't change during focusing
Common Weaknesses of Leica APO-Summicron-SL 50mm F2 ASPH and Sigma 50mm F1.4 DG HSM A
Image Stabilization No vs No Reliant on in-body Image Stabilization



**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Leica APO-Summicron-SL 50mm F2 ASPH vs Sigma 50mm F1.4 DG HSM A Specs Table

Detailed comparison of specifications
General
Brand Leica Sigma
Lens Type Prime Prime
Price CHECK PRICE CHECK PRICE
Lens Type Standard Prime Standard Prime
Lens Mount Leica L Leica L
Max Format 35mm FF 35mm FF
Focal Range 50mm 50mm
Image Stabilization No
Colour Unknown Unknown
Zoom Method No Zoom No Zoom
Power Zoom No No
Zoom Lock No No
Zoom Ratio 1.0X 1.0X
Aperture
Max Aperture F2 F1.4
Min Aperture F22 F16.0
Aperture Ring No No
Diaphragm Blades unknown 9
Optics
Optical Elements 12 13
Optical Groups 10 8
Focusing
Min Focus Distance 0.35m 0.4m
Max Magnification 0.2X 0.18X
Autofocus Yes Yes
AF Motor Type Stepper motor Ring-type ultrasonic
Full Time Manual Yes Yes
Focus Method Internal Internal
Distance Scale No Yes
DoF Scale No Yes
Distance Scale No Yes
Focus Distance Limiter Unknown Unknown
Physical Specs
Weight 740g 815g
Diameter 73mm 85mm
Length 102mm 100mm
Materials Unknown Unknown
Weather Sealing Yes Unknown
Filter Thread 67mm 77mm
Filter Notes - -
Hood Supplied Unknown Unknown
Hood Code Unknown Unknown
Tripod Collar Unknown No
Optional Accessories - -
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